379901021 has 2 divisors, whose sum is σ = 379901022. Its totient is φ = 379901020.

The previous prime is 379901017. The next prime is 379901077. The reversal of 379901021 is 120109973.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 287472025 + 92428996 = 16955^2 + 9614^2 .

It is a cyclic number.

It is not a de Polignac number, because 379901021 - 2² = 379901017 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (379901321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 189950510 + 189950511.

It is an arithmetic number, because the mean of its divisors is an integer number (189950511).

Almost surely, 2^379901021 is an apocalyptic number.

It is an amenable number.

379901021 is a deficient number, since it is larger than the sum of its proper divisors (1).

379901021 is an equidigital number, since it uses as much as digits as its factorization.

379901021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 32.

The square root of 379901021 is about 19491.0497664954. The cubic root of 379901021 is about 724.2527511305.

The spelling of 379901021 in words is "three hundred seventy-nine million, nine hundred one thousand, twenty-one".